Process of manufacturing metal lathing.



W. KLOGKE.

PROCESS OF MANUFACTURING METAL LATHING. APPLICATION FILED FEB. 2, 1909.

928,91 7. Patented 20. 1909.

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PROCESS OF MANUFACTURING METAL LATHING.

APPLICATION FILED FEB.2,1909. 928,91 7, Patented July 20, 1909.

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flay/WW, mam/w A/M UNITED sr Es PATENT OFFICE. A

wILLIAu KLOOKE. or BROOKLYN. NEW YORK, ASSIGNOR TO W. BLIss COMPANY, OF

BROOKLYN, NEW YORK. A CORPORATION OF WEST VIRGINIA.

PROCESS OF MANUFACTURING METAL LATHING.

Specification of Letters Patent.

Patented July 20, 1909. H

Original application filed May 27, 1908, Serial No. 435,272. Divifled and this application file'd February 2, 1909. Serial No. 475,549.

To all whom it may concern:

Be it known that 1, WILLIAM: KLOOKE, a citizen of the United States, residing in the borough of Brooklyn, county of Kings, city and State of New York, have invented certain new and useful Improvements in Proc-.

esses of Manufacturing Metal Lathing, of which the following is a specification.

This invention aims to provide an im-' to other systems may also be produced by the use of this invention.

I propose to effect the cutting and the stretching or forming of the meshes in, successive operations, using separate tools each of which is adapted to perform its function better and to be'more durable than where a single punch is used to effect both the cutting and the stretching. I propose also to positively retain a line of finished meshes in shape while forming the following line of meshes, so as to avoid the distortion of the previously finished line which would otherwise occur. Preferably a compound die is used, having a cutter, a stretcher, and a retainer, arran ed in such positions as to act simultaneous'y upon successive lines of the sheet to cut, stretch and hold in shape the work at each operation of the machine.

Other points of improvement are referred a to in detail hereinafter.

The accompanying drawings illustrate embodiments of the invention.

Figures 1 and. 2 are respectively a face view and a plan of a sheet partly converted into expandedmetal. Figs. 3 and 4 are pers ective views illustrating successive steps of tlie process. Fi 5 is a vertical section of a suitable form 0 apparatus for carrying out the process.

Referring to the drawings, the sheet of metal which is to be converted into expanded metal lathing is indicated at A. It is slitted and bent down as described to form lines B -B B of the .sinuous character indicated.

The movement commences. at the forward edge. After the formation of each sinuous line the sheet is fed a step forward and staggered alternately to the right and to the left, so that the successive sinuous lines are staggered relatively to each other and form the hexa onal meshes shown. Since the stretching of the metal is in a direction at right-angles to the lane of the original sheet, the finished work hangs downwardlyin the mannerindicated in Fig. 5. v

The forward edge of the sheet is advanced into the machine, and the first line of slits C formed by a cutting tool, which at the same time very slightly stretches the metal lying in advance of t e slit C, referably just enough to produce a slit 0 of tlie full length with certainty.

In the following operation the slightly stretched portion D is further stretched in the form shown at D (Fig. 4), while a new line of slightly bent portions D is formed, and a new line of slits C. In the next operation the parts D are again fully stretched to the shape D, being offset by a staggered feed mechanism of any known or suitable type. In stretching the slightly bent portion D to form the sharply or deeply bent portion D'., there is a tendency to distort the previous finished line. Consequently I provide for retaining the finished line 1) in shape, between a pair of correspondingl y shaped dies, simultaneously with the furtherstretching of the part D. By this division of the work the movement of the compound tool or group of tools may be comparatively slight, a very rapid operation can be secured, and a perfect form for the finished product is insured.

In the machine shown a block E is fastened to the cross-head of the apparatus, or is otherwise reciprocated rapidly up and down. A stationary block F carries a table G which supports the sheet A. A holder II is fastened to a bracket J depending from the block E by means of a pin K working in a slot L in the holder, and. is pressed down by a s iral spring M located in a recess in. the block E. This holder, or a number of such holders arranged along the line of work, engages the plate A and holds it down upon the fixed cutter N before the movable tools strike the work.

The movable dies include a series of cutting dies O,forming or stretchingdies P, and retaining dies Q, which are fastened adjacent to each other in the manner shown by means of bolts R passing through a depending flange of the block E. In line with these are the fixed dies S, T and Ufastened by a bolt V to an u ward extension of the lower block F. The s apes of the several dies conform to the shapesof the stretched portions D of the sheet and the sinuous lines B B B The details of'the machine are illustrated more fully in my application No. 435,272, filed May 27, 1908, covering the apparatus, and of which the present application is a division; no claim to the apparatus being made in this a lication.

What claim is:

1. In the manufacture of metal'lathing, the process which consists in cutting and stretching the metal for a single row of cuts in a plurality of successive operations, performing these operations simultaneously upon two adjacent rows of cuts.

2. In themanufacture of metal lathing, the process which consists in cutting and stretchmg the metal for a single row of cuts in a plurality of successive operations, erforming the stretching by a strain in a 'rection transverse to the plane of the sheet.

3. In the manufacture of metal lat'hing,

the process which consists in intermittently completing the cut and effecting part of the stretching in a first operation, and complet= ing the stretch in a second operation, per= forming these operations simultaneously u on two adjacent rows of cuts, and feeding t e sheet intermittently in the intervals be tween the cutting and stretching o erations.

4. In the manufacture of meta lathing, the process which consists in formin a line of meshes and retaining a line of shed meshes in shape while forming the following line, so as to avoid deforming the finished line in the forming of the following line.

5. In the manufacture of metal lathing, the rocess which consists in cutting the meta stretching it, and retaining the stretched metal of a finished line of meshes in shape while stretching the following line so as to avoid deforming the finished line in the forming of the followin line.

' In Witness whereof, I ave hereunto si ned my name in the presence of two subscri ing witnesses.

WILLIAM KLOGKE. Witnesses:

ARTHUR C. FRASER, FRED WHITE. 

